private static void _PopulateSimpleType(IGeometrySink sink, FGeometry.IGeometry geometry)
{
sink.BeginGeometry(GeometryTypeUtils.Convert(geometry.DerivedType));
switch (geometry.DerivedType)
{
case FCommon.GeometryType.GeometryType_LineString:
using (FGeometry.DirectPositionCollection positions = ((FGeometry.ILineString)geometry).Positions)
CreateFigure(sink, positions);
break;
case FCommon.GeometryType.GeometryType_Point:
using (FGeometry.DirectPositionCollection positions = new FGeometry.DirectPositionCollection())
using (FGeometry.IDirectPosition dp = ((FGeometry.IPoint)geometry).Position)
{
positions.Add(dp);
CreateFigure(sink, positions);
}
break;
case FCommon.GeometryType.GeometryType_Polygon:
{
var polygon = (FGeometry.IPolygon)geometry;
using (FGeometry.ILinearRing exterior = polygon.ExteriorRing)
using (FGeometry.DirectPositionCollection positions = exterior.Positions)
CreateFigure(sink, positions);
for (int i = 0; i < polygon.InteriorRingCount; ++i)
{
using (FGeometry.ILinearRing interior = polygon.GetInteriorRing(i))
using (FGeometry.DirectPositionCollection positions = interior.Positions)
CreateFigure(sink, positions);
}
}
break;
default:
throw new NotSupportedException(
string.Format(
CultureInfo.CurrentCulture,
SR.UnsupportedGeometryTypeException,
geometry.DerivedType
)
);
}
sink.EndGeometry();
}
/// <summary>Starts the call sequence for the specified <see cref="GeometryType" />.</summary>
/// <param name="type">The type of the geometry to build.</param>
public override void BeginGeometry(GeometryType type)
{
_GeometryType = GeometryTypeUtils.Convert(type);
}
/// <summary>Applies a geometry type call sequence to the specified <paramref name="sink" />.</summary>
/// <param name="sink">The sink to populate.</param>
/// <remarks>
/// <para>The call sequence is a set of figures, lines, and points for geometry types.</para>
/// </remarks>
public void Populate(IGeometrySink sink)
{
sink.SetCoordinateSystem(CoordinateSystem);
switch (_Geometry.DerivedType)
{
case FCommon.GeometryType.GeometryType_LineString:
case FCommon.GeometryType.GeometryType_Point:
case FCommon.GeometryType.GeometryType_Polygon:
_PopulateSimpleType(sink, _Geometry);
break;
case FCommon.GeometryType.GeometryType_MultiLineString:
sink.BeginGeometry(GeometryTypeUtils.Convert(_Geometry.DerivedType));
{
var multiLineString = (FGeometry.IMultiLineString)_Geometry;
for (int i = 0; i < multiLineString.Count; ++i)
{
using (FGeometry.ILineString lineString = multiLineString[i])
_PopulateSimpleType(sink, lineString);
}
}
sink.EndGeometry();
break;
case FCommon.GeometryType.GeometryType_MultiPoint:
sink.BeginGeometry(GeometryTypeUtils.Convert(_Geometry.DerivedType));
{
var multiPoint = (FGeometry.IMultiPoint)_Geometry;
using (FGeometry.DirectPositionCollection positions = new FGeometry.DirectPositionCollection())
for (int i = 0; i < multiPoint.Count; ++i)
{
using (FGeometry.IPoint point = multiPoint[i])
_PopulateSimpleType(sink, point);
}
}
sink.EndGeometry();
break;
case FCommon.GeometryType.GeometryType_MultiPolygon:
sink.BeginGeometry(GeometryTypeUtils.Convert(_Geometry.DerivedType));
{
var multiPolygon = (FGeometry.IMultiPolygon)_Geometry;
for (int i = 0; i < multiPolygon.Count; ++i)
{
using (FGeometry.IPolygon polygon = multiPolygon[i])
_PopulateSimpleType(sink, polygon);
}
}
sink.EndGeometry();
break;
case FCommon.GeometryType.GeometryType_MultiGeometry:
sink.BeginGeometry(GeometryTypeUtils.Convert(_Geometry.DerivedType));
{
var multiGeometry = (FGeometry.IMultiGeometry)_Geometry;
for (int i = 0; i < multiGeometry.Count; ++i)
{
using (FGeometry.IGeometry geometry = multiGeometry[i])
_PopulateSimpleType(sink, geometry);
}
}
sink.EndGeometry();
break;
default:
throw new NotSupportedException(
string.Format(
CultureInfo.CurrentCulture,
SR.UnsupportedGeometryTypeException,
_Geometry.DerivedType
)
);
}
}